package com.esd.shiro;

import com.esd.sys.entity.User;
import com.esd.sys.service.UserService;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.ObjectUtils;

public class ShiroRealm extends AuthorizingRealm {

    @Autowired
    private UserService userService;

    /**
     * 权限配置
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        return null;
    }

    /**
     *  认证配置
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
        if (ObjectUtils.isEmpty(authenticationToken.getPrincipal())) {
            return null;
        }
        //获取用户信息
        String name = authenticationToken.getPrincipal().toString();
        User user = userService.getByUsername(name);
        if (user == null) {
            //这里返回后会报出对应异常
            return null;
        } else {
            //这里验证authenticationToken和simpleAuthenticationInfo的信息
            return new SimpleAuthenticationInfo(user, user.getPassword(), getName());
        }
    }
}
